fipuser_linux.c

这是一个SIGMA方案的PMP播放器的UCLINUX程序,可播放DVD,VCD,CD MP3...有很好的参考价值.

/*
 * Here are all PRIVATE definitios and functions definied, which are the same for all players.
 * To simplify it, we also declare common functions here!!!
 *
 * Copyright(c) 2002 Sigma Designs, Inc.
 * Author: Markus Brenner
 * September 2002
 */

#include <asm/hardware.h>

//common functions (we do it here, so that we get only one object file resp. don't have to change makefiles)

#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include "fipioctl.h"
#include "fipuser_private.h"

int fip_fd;

#ifndef FIP_NO_LOAD
#warning fip_loadmodule
#include "loadmodule.h"
int fip_loadmodule()
{
		return loadmodule("fipmodule.o");
}
#endif /* !FIP_NO_LOAD */

int fip_open()
{
	fip_fd = open("/dev/fip", O_RDONLY | O_NONBLOCK);

//turn on all leds
//		*(FIP_LED_DATA_REG) = 0x00;
//		*(FIP_COMMAND_REG) = FIP_CMD_DATA_SET_RW_MODE_WRITE_LED_PORT;
//		fip_wait_ready();

	return fip_fd;
}


int fip_gethandle() {
	return fip_fd;
}

void fip_flushfifo(void) { //flush all scancode in the fifos
	ioctl(fip_fd, FIP_IOCTL_FLUSH_FIFO);	
}


void fip_close(void) {
	close(fip_fd);
	fip_fd = -1;
}